N. transience, transientness, evanescence, impermanence, fugacity, caducity, mortality, span, nine days' wonder, bubble, mayfly, spurt, flash in the pan, temporary arrangement, interregnum, velocity, suddenness, changeableness, transient, transient boarder, transient guest

V. be transient, flit, pass away, fly, gallop, vanish, fade, evaporate, pass away like a cloud, pass away like a summer cloud, pass away like a shadow, pass away like a dream

Adj. transient, transitory, transitive, passing, evanescent, fleeting, cursory, short-lived, ephemeral, flying, fugacious, fugitive, shifting, slippery, spasmodic, instantaneous, momentaneous, temporal, temporary, provisional, provisory, deciduous, perishable, mortal, precarious, unstable, insecure, impermanent, brief, quick, brisk, extemporaneous, summary, pressed for time, sudden, momentary

Adv. temporarily, pro tempore, for the moment, for a time, awhile, en passant, in transitu, in a short time, soon, briefly, at short notice, on the point of, on the eve of, in articulo, between cup and lip

Phr. one's days are numbered, the time is up, here today and gone tomorrow, non semper erit aestas, eheu, fugaces labuntur anni, sic transit gloria mundi, a schoolboy's tale, the wonder of the hour, [Byron], dum loquimur fugerit invidia aetas, fugit hora, all that is transitory is but an illusion

N. changeableness, mutability, inconstancy, versatility, mobility, instability, unstable equilibrium, vacillation, fluctuation, vicissitude, alternation, restlessness, fidgets, disquiet, disquietude, inquietude, unrest, agitation, moon, proteus, chameleon, quicksilver, shifting sands, weathercock, harlequin, cynthia of the minute, april showers, wheel of fortune, transientness

V. fluctuate, vary, waver, flounder, flicker, flitter, flit, flutter, shift, shuffle, shake, totter, tremble, vacillate, wamble, turn and turn about, ring the changes, sway to and fro, shift to and fro, change and change about, waffle, blow with the wind (irresolute) 605, oscillate, vibrate between, two extremes, oscillate between, two extremes, alternate, have as many phases as the moon

Adj. changeable, changeful, changing, mutable, variable, checkered, ever changing, protean, proteiform|, versatile, unstaid, inconstant, unsteady, unstable, unfixed, unsettled, fluctuating, restless, agitated, erratic, fickle, irresolute, capricious, touch and go, inconsonant, fitful, spasmodic, vibratory, vagrant, wayward, desultory, afloat, alternating, alterable, plastic, mobile, transient, wavering

Adv. seesaw, off and on

Phr. "a rolling stone gathers no moss", pictra mossa non fa muschis, honores mutant mores, varium et mutabile semper femina